dbl_link_onto(bd, &stp->large_objects);
stp->n_large_blocks += bd->blocks; // might be larger than req_blocks
initBdescr(bd, stp);
dbl_link_onto(bd, &stp->large_objects);
stp->n_large_blocks += bd->blocks; // might be larger than req_blocks
initBdescr(bd, stp);